A precise conical profile used on tool holders and machine spindles to lock them together concentrically. The wedging action provides high holding force and extreme repeatability, allowing operators to swap heavy milling cutters or drill chucks while maintaining dead-center alignment.
Heard on the job
Wipe down the taper on that tool holder before you load it in the spindle.
Do not mix it up with
- Runout: A dirty taper causes runout, but the taper is the physical cone shape itself.